Type-casting machine



"v1.78. THOMPSON.

TYPE mum; mcnme.

APPLICATION F| LED FEB. 1, I916- I 1,345,286. Patented June 29, 1920.

, 2 SHEETS-SHEET 1.

J. S. THOMPSON.

TYPE CASTING MACHINE.

APPLICATION man FEB. 1, 19.16.

' 1,345,286. Patented June 29, 1920.

2 SHEETS- SHEET 2.

"ti-"iii" JOHN S. THOMPSON, OF CHICAGO, ILLINOIS.

TYPE-OAEtTIIdG v MACHINE.

masses.

Specification of Letters Patent. Patented J 29 1920;,-

Application filed February "7. 1916. Serial No. 76,664.

To all whom it may concern Be it known that I, JOHN S. TnoMrsoN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improven'ients in 'lype-Casting Machines, of which the following is a full, clear, concise, and. exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to improvements in type casting" machines and has for one of its objects to provide a machine which will produce, by means of a series of separate castings, properly united, continuous strips of material for use in the printing art, such, for instance, as leads, rules, and the like. 7

In certain machines heretofore produced by me I have provided means for casting individual type, the casting; operation for each type being complete before the next succeeding type is formed.

llly present inventionlnls for one of its objects the provision of means whereby such machines or similar machines may be adapted to cast continuous strips of material. 'lo this end I provide means whereby a section of the strip first cast. This section is then moved so that while the greater part of the section extends beyond the mold, there still remains in the mold aportion of the casting. This portion forms one wall of the mold cavity. and in the ilSflli fl operation of the next succeeding scction the hot metal intimately fuses l\\'ltll that portion of the preceding casting, l vin within the mold. so that a continuous fuse olnt is made between the two castings;

This process i s contimied until a strip is provided of suitable or desired length.

For the purposeof disclosing my invention. I have shown in the accompanying alraivings a machine adapted to cast the metal strips. In these drawingsl igrure 1 is a side elevation, partially in section;

Fig. 9. is an end view of the structure illustrated in Fig. 1.

Fig. 3 is a sectional vie\vtaken on the line 33 of Fig. 1;

Fig. 4 is a perspective view of the parts of the mold;

Fig. 5 is an enlarged detail perspective of a body piece and jet ejector of the mold;

Fig. (Sis an enlarged detail of one of the cast sections; and

Fig. 7 is a detailed perspective of a modification of the block which closes the front end of the mold.

In the machine illustrated I provide a suitable base or support 1, of any character, on which is mounted ,the mold and other parts of the machine. This mold consists, respectively, of the top and bottom mold blocks 2 and 3, the top and bottom jet blocks 4 and 5 (Fig. 2), the two side walls (3 and 7, the body piece 8, and the jet ejector S). A nozzle plate 10 is provided with an opening, which communicates, through a suitable nozzle 11, with a pot 12 in which molten metal is contained and kept heated. The top block 2 is vertically adjustable by means of the screw 13, and is held in a rigid adjusted position by the additional set screws 11. This top block is adjustable vertically for the purpose of varyiim the thickness of the rule or other material to be -ast. In order to produce printing surfaces of various kinds on the edge of the material cast, I provide the removable plate 15, adapted to close the front end of the mold cavity, having a suitably formed groove 16 in the side thereof opposite the mold cavity.

The body piece 8 regulates the width of the material cast, and can be of any desired thickness. and is adapted to be reciprocated between the top and bottom mold blocks. This body piece acts also as an ejector for moving: the molded section forward. The body piece :5 is removably connected to a pusher plate 16. in turn having a link conn'cction by an adjustable link 17 \vith'one leg 18 of a bell crank lever, mounted on a shaft 1!). The opposite leg: 2U of the hell crank lever is connected with suitable driving: mechanism for rocking the lever to move the pusher plate 16 backward and forward. The adjustable rod 17 is slidably connected to the leg 18 and is provided with two adjusting nuts Ql) and 21, between which the lever 18 operates, so as to allow the lever to have a icertain amount of lost motion. The pusher plate 16 is limited in its rearward movement by an adjustable stop 22 secured on a suitable support :23 mounted on the frame, and the width of the casting may be varied by adjusting this stop and the nut 20.

The casting face of the body piece 8 has an irregular contour, as shown at 24. This face may be given different forms, but I have shown it as having a zigzag shape, not only to increase the surface of the sections to be fused, but tomake an irregular joint between the fused sections to prevent danger of the sections being broken apart. If the sections were cast and fused together on a straight line, the danger of their breaking would be materially greater than. when cast with the irregular surface shown. In order that the sections will more readily fuse, and also further resist breaking strains, the

molding face of the member 8 is given a' V-shaped or knife edge, as at 25, so that the corresponding edge of the section will be cast with a V-shaped recess in its edge.

The jet ejector 9 is likewise connected to the pusher plate 16, and tapered from back to front to conform to the shape of the jet casting. As the jet poition of the casting must be removed from the material, I prefer to cast thisportion in such a manner that the successive qgstings do not unite, so that it'may be more'readily removed. To accomplish this, I provide a vertically movable member 26, connected by means of a roller 27 to a suitable lever 28 connected with the driving mechanism. A projection 29 on the member 26 is adapted to cover the ends of the jet blocks 4 and 5 when the member 26 is raised. -.When a cast is being made the member 26 is in the raised position shown in Fig. 4. After a cast has been made and immediately before it is pushed forward by the reciprocation ofthe member 8, the member 26 is lowered to leave the side of the jet cavity open, so that the jet casting may move forward without interference. The jet cavity 30 being narrower than the mold cavity, that portion of the casting is'entirely ejected from the mold, so that "after the material has been moved forward, the covering member 29 may again be moved up into position for the next cast. The breaking off of the jet ortion may be donein any suitable manner.

he point of fracture may also be trimmed to make the cast material smooth and of prope height in any desired manner. I prefer 1y employ a trimming knife 31 suitably mounted on the frame 1 and opposite the guide block- 32, also mounted on the frame 1.

In operation, when the first east is to be made, the meinber 26 may be disconnected from the arm 27 and raised sufficiently far to cover the entire side opening of the mold and jet cavities. With the parts in this position, the molten metal is forced through the jet opening 30 into the mold-cavity. As soon as the cast is made, the n1ember26, having been connected to the arm 27, is moved downward out of the way, and the arm 18 is reciprocated and moves the cast section forward until it assumes the position shown in Fig. 3 of the drawing, a portion of the casting, it being noted, lying within the mold cavity and forming one wall of this cavity for the next cast. The jet ejector 9, however, projects beyond the end of the body piece 8, and as the portion of the casting is consequently narrower than the section cast in the mold proper, it is ejected completely from the mo d, beyond the left edge of the vertically movable member 26. The body piece 8 is then withdrawn to the position illustrated in Fig. 3, and the vertical member 26 is raised, the part 29 thereof covering the open side of the jet cavity. A second measure of molten material is then forced into the mold cavity. The molten metal coming in contact with the serrated edge of the first section cast, which I will designate as A, immediately fuses with this edge and forms a single piece. The operation of forcing the material forward is again repeated, and the casting operation re peated until the material is as long as is desired.

In Fig. 7, I have illustrated a modified form of the mold. It is sometimes desirable to cast leads, slugs or other material which in height is considerably less than type high,

in which event the plate 15 is removed and a block 32 is secured in its place. This block has a plate 33 secured thereto in such manner that it projects into and reduces the height of .the mold cavity, the top mold block 2.fitting on the top thereof. The plate 33 is of the" same thickness as the body piece 8,'and the latter is reduced in width to accommodate the plate 33. In all other respects, however, the casting mold is the same and the operation of casting is carried on in the manner above described.

While I have shown and described ceitain embodiments of my invention it will be un derstood that various modifications and changes may be made therein without departing from the spirit of the invention as set forth in the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A machine for casting in a plurality of s individual castings a continuous strip of material for use in the printing art comprising 3 a mold having a moldcavity for an individual casting having one movable wall and one wall formed by the preceding casting and a jet cavity of less width than the mold cavity and a movable closure. member for one side of the jet cavity.

2. A machine for casting in a plurality of individual castings a continuous strip of material for use in the printing art comprising a mold having a mold cavity for an individual casting and a jet cavity, movable members for closing two sides of the jet cavity and means for removing the casting from the mold cavity.

3. A machine for casting in a plurality of individual castings a continuous strip of material for use in the printing art commaterial for use in, the printing art comprising .a mold having a mold cavity for an individual casting and a jet cavity, the completed casting of one casting operation forming a closure member for the mold casting for the next operation, a movable member for covering one side of the jet cavity and uncovering it after the casting operation and means for removing the casting from the mold cavity.

5. A machine for casting in a plurality of individual castings a continuous strip of material for use in the printing art comprising a mold having a mold cavity for an individual casting and a jet cavity, one wall of the mold cavity having a diagonally dis posed molding face extending from side to side and one Wall formed by the previously made casting, said jet cavity being of less Width than the mold cavity, a movable member for covering one'side of the jet cavity during the casting operation and means for removing the casting from the mold cavity.

6. A machine for casting in a plurality of individual castings a continuous strip of material for use in the printing art comprising a mold for an individual casting, having a mold cavity and a jet cavity of less Width than the mold cavity, a movable body piece forming one mold face of the mold cavity, a movable jet ejector, the edge of said body piece at the limit of its forward movement being within the edges of the mold cavity and the jet ejector at the limit of its forward movement being at least to the edges of the jet cavity;

T. A machine for casting in a plurality ofcastings a continuous strip of material for use in the printing art comprising a mold having a mold cavity for an individual casting and a jet cavity, the jet cavity being of less width than the mold cavity, a body piece and a jet ejector, the movement of the body piece in ejecting the casting being such as to leave a portion of the casting Within the mold cavity and the movement of the jet ejector being smficient to remove the jet completely from the jet cavity.

In Witness whereof I have hereunto subscribed my-name.

JOHN S. THOMPSON. 

